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P/2010 R2 (La Sagra)
Classification: Encke-type Comet          SPK-ID: 1003104
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455546.5 (2010-Dec-16.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1537389030537912 8.7662e-07  
a 3.098841438911215 1.5094e-05 AU
q 2.622428955355373 1.3941e-05 AU
i 21.39501831272986 3.7518e-05 deg
node 270.7063642818345 0.00017364 deg
peri 59.50668720671933 0.0019377 deg
M 31.35016017851801 0.0014901 deg
tp 2455372.985919728088
(2010-Jun-25.48591973)
0.0069813 JED
period 1992.496004556019
5.46
0.014558
3.986e-05
d
yr
n .1806779030807731 1.3201e-06 deg/d
Q 3.575253922467057 1.7415e-05 AU
  Orbit Determination Parameters
   # obs. used (total)      408  
   data-arc span      980 days (2.68 yr)  
   first obs. used      2010-08-12  
   last obs. used      2013-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      3  
   fit RMS      .62576  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:44:40  

Additional Information
 Earth MOID = 1.67337 AU 
 T_jup = 3.099 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 6.4 mag 0.7 20 from 114 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 26.   n/a 20 autocmod 2.5c
comet nuclear magnitude M2 15.5 mag 0.4 20 from 273 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 20 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 20 autocmod 2.5c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2010.5   P/2010 R2       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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